Eighth grader Domanik Green, who attends Paul R. Smith Middle School in Holiday, was suspended from school for 10 days and also charged with an offense against a computer system and unauthorized access, according to The Tampa Bay Times.

A number of media reports are pointing to the fact that one of the computers that Green accessed had encrypted questions for the 2014 version of a standardized test that Florida administers to students in all its public schools stored on it, but authorities say that the teen did not view or tamper with those files. Meanwhile, Green has argued that his actions were merely a prank.

“I wasn’t really thinking, I was just kind of really annoyed at the teacher that day,” he told ABC Action News. “I took a picture off of Google and put it on his laptop and blew it up. That way, when he got on the laptop, there’d be a picture of something gross.”

Green’s mother, Eileen Foster, acknowledged that her son did something wrong but felt that the arrest was unnecessary, and said she didn’t think it should be so easy for students to access the school’s computer system.